Improvement in car-springs



P. G. GARDINBR.,

GAR SPRING.

No.. 107,036. Patented Sept, 6, 1870.

UNITED STATES PATENT OFFICE.

PERRY e; GARDINER, oF NEW YORK, N.- Y.

IMPROVEMENT IN CAR-SPRINGS.

Speccniion forininglpart. of Letters Patent No. 107.036. dated September 6, 18.70.

To all whom it 11i/ay concern:

Beit known that I, PERRY G. GARDINER, of the city, county, and State of New York, have invented a new and useful Improvement in Railroad-Car Springs; and I do declare that the following is a full and exact descrip- 'tion of my said improvement, reference being had to the accompanying drawings, forming part of this my specification.

Figure I represents one mode of constructing the spring by a vertical lf ross-section through the central axes of the same.

A is the india-rubber cylinder, of t-he usual form. y

B B are the two flaring and spreading circular-mouthed end pieces, of cast-iron, ,which commence to spread or enlarge indiameter from the ends 0f the rubber cylinders, and bending outward by an easy curve, so as to leave a gently-widening space all around between their inner surfaces and the part of the india-rubber cylinders along which they eX- tend, as seen at b b.

To strengthen vthe rubber cylinder, I surround it midway between the ends with an iron ring, C, which, to prevent slipping and being displaced from a horizontal position, is

set in a semicircular-shaped groove around end pieces in this form of. the spring are vpro- .vided with a central .opening to receive the length ot' the spring, and is there insertedl at its lower end into a tubular socket, f, through a suitable` opening, and held by an upset or head, -the other end of the bolt being secured by a nut in the usual manner, and the other end of the tubular socket f'being'-iiii'e`d to the lower setting, B,` and castsolid with it. It extends into the opening in the rubber cylinder about halt` its length, and tapers in its outer surface toward the top, soas to allow the rub:

ber to bulge around it wit-hout being ,pinched and injured by the friction.

The construction represented in Fig. I is adapted for. use as a buer or drawspring; that in Fig. II for a body or bearing spring.

What I claim in the foregoing-described improvement, and for which I desire Letters Patent,.is

1. The combination ofthe caps B, constructed with tubular sockets d, the indiarubber cylinder A, ring e, and the bolt, all arranged and operating as shown and described.

2. The combinationof the cap B, the cap B, constructed with the tubular socket f, the india-rubber cylinder A, ring c, and the bolt, all arranged and operating as shown and described.

l P. .G. GARDINER.

Witnesses:

J. B. STAPLES, S. A. STODDER. 

